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Discrete self-trapping, soliton interactions, and beam steering in nonlinear waveguide arrays.
We investigate the self-trapping phenomenon in one-dimensional nonlinear waveguide arrays. We discuss various approximate analytical descriptions of the discrete self-trapped solutions. We analyzeExpand
Theory of electronic diamagnetism in two-dimensional lattices.
The problem of tight-binding electrons in a two-dimensional lattice with a magnetic flux p/q in each plaquette is investigated for p=0,1,3, q=2,3,4,6,8. For fixed electron filling, v, the totalExpand
Cascading of quadratic nonlinearities: An analytical study.
  • Kobyakov, Lederer
  • Physics, Medicine
  • Physical review. A, Atomic, molecular, and…
  • 1 October 1996
A comprehensive analytical approach to scalar and vectorial interaction in cascaded quadratic nonlinearities is presented. Exact formulas for the intensity as well as the phase modulation inExpand
Origin of the persistent oscillations of solitary waves in nonlinear quadratic media.
Recently, solitary waves characterized by a mutual locking of the fundamental and second harmonics in quadratically nonlinear media attracted a lot of attention @1‐10#. The study of these localizedExpand
Collision of solitary waves in media with a second-order nonlinearity.
We consider the collision behavior of self-trapped optical beams in media with a quadratic nonlinearity. It is found that the solitary waves behave similarly to true solitons above a criticalExpand
Linear temperature term of heat capacity in insulating and superconducting La-Ba-Cu-O systems.
The heat capacity of La/sub 2-//sub x/Ba/sub x/CuO/sub 4/ was investigated between 0.8 and 10 K. The linear temperature term ..gamma..T of the heat capacity is absent in the antiferromagnetic-orderedExpand
Adsorption of oxygen on Cu(100). I. Local structure and dynamics for two atomic chemisorption states.
By means of temperature-dependent surface-extended x-ray-absorption fine structure (SEXAFS) measurements we characterize two different chemisorption state of atomic O/Cu(100), one corresponding to aExpand
Soliton interaction near the zero-dispersion wavelength.
  • Uzunov, Gölles, Lederer
  • Physics, Medicine
  • Physical review. E, Statistical physics, plasmas…
  • 1 July 1995
Superconductivity from commensurate flux phases.
We use a renormalized mean-field theory of the {ital t}-{ital J} model to show that flux states closely related to those recently proposed by Anderson, Shastry, and Hristopoulos are stabilized, atExpand
Pulse switching in nonlinear fiber directional couplers.